Add 54/7 and 45/90
1st number: 7 5/7, 2nd number: 45/90
54/7 + 45/90 is 115/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
54/7 = 54 × 90/7 × 90 = 4860/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
45/90 = 45 × 7/90 × 7 = 315/630 - Add the two like fractions:
4860/630 + 315/630 = 4860 + 315/630 = 5175/630 - 5175/630 simplified gives 115/14
- So, 54/7 + 45/90 = 115/14
In mixed form: 83/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/14+45/90 54/21+45/90 54/35+45/90 54/49+45/90